| Point Forecast: Chambersburg PA 39.93N 77.66W (Elev. 188 m) |
Last Update: 8:29 am EDT Jul 13, 2025 |
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| Date | 07/13 | 07/14 | ||||||||||||||||||||||
| Hour (EDT) | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 |
| Temperature (°C) | 27 | 29 | 31 | 32 | 32 | 31 | 29 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 23 | 26 | 27 |
| Dewpoint (°C) | 23 | 24 | 24 | 24 | 23 | 24 | 23 | 24 | 23 | 23 | 24 | 23 | 23 | 23 | 22 | 22 | 23 | 22 | 22 | 22 | 22 | 23 | 23 | 24 |
| Heat Index (°C) | 29 | 33 | 37 | 37 | 37 | 36 | 34 | 34 | 32 | 30 | 28 | 25 | 24 | 26 | 31 | |||||||||
| Surface Wind (mph) | 2 | 3 | 3 | 5 | 5 | 5 | 5 | 3 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Wind Dir | S | S | S | S | SE | S | SW | S | S | S | S | W | SE | S | S | S | S | S | S | S | S | SW | S | SW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 54 | 50 | 46 | 42 | 52 | 63 | 74 | 76 | 79 | 81 | 78 | 76 | 73 | 66 | 57 | 52 | 59 | 67 | 64 | 66 | 65 | 59 | 61 | 56 |
| Precipitation Potential (%) | 9 | 19 | 30 | 42 | 43 | 60 | 72 | 70 | 64 | 55 | 66 | 67 | 60 | 49 | 36 | 26 | 23 | 18 | 15 | 13 | 13 | 25 | 25 | 25 |
| Relative Humidity (%) | 83 | 74 | 66 | 64 | 61 | 68 | 70 | 72 | 74 | 79 | 87 | 90 | 92 | 97 | 97 | 97 | 100 | 100 | 100 | 100 | 100 | 97 | 88 | 82 |
| Rain | -- | SChc | Chc | Chc | Chc | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Chc | Chc | Chc | SChc | SChc | SChc | -- | -- | -- | Chc | Chc | Chc |
| Thunder | -- | SChc | Chc | Chc | Chc | Lkly | Lkly | Lkly | Lkly | Chc | Chc | Chc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/15 | |||||||||||||||||||||||
| Hour (EDT) | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 |
| Temperature (°C) | 28 | 29 | 31 | 31 | 31 | 30 | 29 | 29 | 28 | 28 | 27 | 25 | 24 | 23 | 23 | 22 | 22 | 21 | 21 | 22 | 22 | 23 | 25 | 27 |
| Dewpoint (°C) | 24 | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 22 | 22 | 21 | 21 | 21 | 22 | 22 | 23 | 23 |
| Heat Index (°C) | 32 | 34 | 35 | 36 | 36 | 34 | 33 | 32 | 32 | 31 | 29 | 25 | 24 | 25 | 30 | |||||||||
| Surface Wind (mph) | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 |
| Wind Dir | SW | SW | W | W | W | W | W | W | S | S | S | S | N | N | N | N | N | N | N | N | N | N | NE | E |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 50 | 58 | 67 | 75 | 75 | 75 | 75 | 75 | 75 | 62 | 63 | 64 | 65 | 65 | 66 | 66 | 67 | 67 | 68 | 70 | 73 | 75 | 66 | 58 |
| Precipitation Potential (%) | 25 | 25 | 25 | 62 | 62 | 62 | 62 | 62 | 62 | 25 | 25 | 25 | 25 | 25 | 25 | 12 | 12 | 12 | 12 | 12 | 12 | 21 | 21 | 21 |
| Relative Humidity (%) | 77 | 72 | 65 | 63 | 63 | 65 | 67 | 70 | 72 | 74 | 79 | 88 | 94 | 97 | 100 | 100 | 100 | 100 | 97 | 97 | 97 | 93 | 88 | 79 |
| Rain | Chc | Chc | Chc | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Chc | Chc | Chc | Chc | Chc | Chc | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc |
| Thunder | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- |
